These transfers are to fit Gripping Beast extra large round shields, Specifically packs LR17, LR18 and LR19. These have a mix of shield sizes which are cast on the figures. The sizers vary from 14mm to 16,5 and 17mm. I have gone for an average of the sizes and done a 14mm, 15mm and 16mm diametre. All have the same shield boss size on the models thankfully which is 4mm.